Issue #2350297 by mitrpaka: Replace extend of deprecated DrupalUnitTestBase...

Issue #2350297 by mitrpaka: Replace extend of deprecated DrupalUnitTestBase with KernelTestBase in Contact.

core/modules/contact/src/Tests/MessageEntityTest.php

@@ -7,7 +7,7 @@
 namespace Drupal\contact\Tests;
 
 use Drupal\contact\Entity\Message;
-use Drupal\simpletest\DrupalUnitTestBase;
+use Drupal\simpletest\KernelTestBase;
 
 /**
  * Tests the message entity class.
@@ -15,7 +15,7 @@
  * @group contact
  * @see \Drupal\contact\Entity\Message
  */
-class MessageEntityTest extends DrupalUnitTestBase {
+class MessageEntityTest extends KernelTestBase {
 
   /**
    * Modules to enable.